Column.



No. 644,777. Patented Mar. 6, I900. G. J. PFAHL.

COLUMN.

(Application filed Sept. 15, 1899.)

(No Model.)

WITNESSES INVENTOH GEORGE J. Pl AI-IL, OF \VIII'IE PLAINS, NEIV YORK.

COLUMN.

SPECIFIGATIOII forming part'of Letters Patent No. 644,777, dated March 6, 1900. Application filed September 15, 1899. Serial No- 730,548- (No model.)

To all whom it may concern:

Be itknown that I, GEORGE J. PFAHL, a citizen of the United States, residing at White Plains,in the county of Westchesterand State of New. York, have invented certain new and useful Improvements in Columns, of which the following is a full and complete specification, such as will enable those skilled in the art to which it appertains to make and use the same. p I

This inventionrelates-to columns; and the object thereof is to provide an improved colnmn which is built up of several sections which are connected and bound together in a completed column by improved means according to my invention.

The invention is fully disclosed in the following specification, of which the accompanyy the column together.

In the drawings forming part of this specification I have shown at 5 one of the sections of a column, and, as shown in the drawings, the column is constructed of twelve of said sections, which are preferably convoluted upon their adjacent sides. The section 5 comprises two forn1s,one of which is shown at 5 and the other at 5 each of which consists of a strip or block of wood or other suitable material. The sections shown at 5 have their sides convoluted by means of two longitudinal grooves 6 and -7, which are separated by a longitudinal rib 8. The grooves 6 are preferably deeper than the grooves 7, and said grooves and the intermediate rib 8 form a continuous curve terminating in plane portion 11 and 12 upon the sides of the section 5. Each of the sections 5" is provided with convoluted sides which are exactly the reverse in their groove and rib formations to the sections 5, and when placed together an edge of one of the sections 5 will fit accurately into an edge of a section 5 Each of the sectionso and 5 is formed umn is formed,

with an inner face 9, which is preferably the sections 5 and 5 are connected in a con-v tinuous series by fitting the edges thereof together, as above described, a polygonal column is then preferablyturned or otherwise cut down to form a true cylinder, which may be fluted or otherwise decoratedas desired.v

The outer surface of the col- In forming the complete column, as shown in Fig. 1, I connect a number of the sections 5 and 5 sniiicient to form, preferably, onehalf of a column, the several sections thereof being gluedor otherwise made to adhere, as

may be desired, and allow the completed halfcolumn to dry and set. When two column halves or members have been completed, as abovedescribed, I place them togetherto form curing the adjacent ends of the twohalves in a completed column, gluing or otherwise se i thesame manner as the separate sections of Fig.3 and provided upon their inner faces with dovetail tongues 14 and angular ribs 15. The tongues 1% take into similar grooves 16, formed in the members 5 and 5 asshown in Fig. 2, and the ribs 15 closely fit the angularlydiverging inner facesof the adjacent sections 5 and 5 with which said tie-blocks 13 are connected. I

In securing the tie-blocks 13 in operative position they are preferably inserted at the top and bottom of the column, as many being used as desired, and are driven home in any desired manner, the tongues 14 binding the blocks 13 closely to the sections 5 and 5 and also closely binding the column members or halves together.

If the column be initially formed of a plurality of sections glued together or otherwise caused to adhere, there is great danger of disintegration of the column. Furthermore, when the complete column is formed as an entirety and then allowed to set and dry the result is variable and not as satisfactory as when the column is built up of two halves or Patent 1. Acolumn consisting-of a plurality of longitudinal sections which fit each other at their edges and are provided upon their inner surfaces with dovetail grooves, the inner sides of said sections diverging angularly, and angular tie-blocks which fit said inner surfaces of said sections and are provided with dovetail tongues which take into said grooves therein, substantially as shown and described.

2. A column composed of separate longitudinal sections, two of which are fitted at their edges by longitudinal grooves and ribs, the inner surfaces of said sections diverging angularly, dovetail grooves formed in the inner surfaces of said sections, and an angular tieblock which fits the inner surface of said sections at their line of connection and is provided with'dovetail tongues which fit said dovetail grooves in said sections, substantially as described.

In testimony'that I claim the foregoing as my invention I have signed my name, in presence of the subscribing witnesses, this 14th day of September, 1899.

GEORGE J. PFAl-IL.

Witnesses:

F. A. STEUART, O. O. OLsEN. 

